mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-28 01:09:39 +03:00
443 lines
11 KiB
C
443 lines
11 KiB
C
/*
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* Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
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* Copyright 2004-2008 John Tytgat <joty@netsurf-browser.org>
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* Copyright 2007 James Bursa <bursa@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Export a content as a DrawFile (implementation).
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*/
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#ifdef WITH_DRAW_EXPORT
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#include <assert.h>
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#include <limits.h>
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#include "oslib/draw.h"
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#include "oslib/osfile.h"
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#include "pencil.h"
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#include "content/content.h"
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#include "desktop/plotters.h"
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#include "riscos/bitmap.h"
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#include "riscos/gui.h"
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#include "riscos/save_draw.h"
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#include "utils/log.h"
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#include "utils/utils.h"
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static bool ro_save_draw_rectangle(int x0, int y0, int width, int height,
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int line_width, colour c, bool dotted, bool dashed);
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static bool ro_save_draw_line(int x0, int y0, int x1, int y1, int width,
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colour c, bool dotted, bool dashed);
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static bool ro_save_draw_polygon(const int *p, unsigned int n, colour fill);
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static bool ro_save_draw_path(const float *p, unsigned int n, colour fill,
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float width, colour c, const float transform[6]);
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static bool ro_save_draw_fill(int x0, int y0, int x1, int y1, colour c);
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static bool ro_save_draw_clip(int clip_x0, int clip_y0,
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int clip_x1, int clip_y1);
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static bool ro_save_draw_text(int x, int y, const struct css_style *style,
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const char *text, size_t length, colour bg, colour c);
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static bool ro_save_draw_disc(int x, int y, int radius, colour colour,
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bool filled);
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static bool ro_save_draw_arc(int x, int y, int radius, int angle1, int angle2,
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colour c);
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static bool ro_save_draw_bitmap(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg, bitmap_flags_t flags);
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static bool ro_save_draw_group_start(const char *name);
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static bool ro_save_draw_group_end(void);
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static bool ro_save_draw_error(pencil_code code);
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static const struct plotter_table ro_save_draw_plotters = {
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.rectangle = ro_save_draw_rectangle,
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.line = ro_save_draw_line,
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.polygon = ro_save_draw_polygon,
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.fill = ro_save_draw_fill,
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.clip = ro_save_draw_clip,
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.text = ro_save_draw_text,
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.disc = ro_save_draw_disc,
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.arc = ro_save_draw_arc,
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.bitmap = ro_save_draw_bitmap,
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.group_start = ro_save_draw_group_start,
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.group_end = ro_save_draw_group_end,
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.path = ro_save_draw_path,
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.option_knockout = false,
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};
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static struct pencil_diagram *ro_save_draw_diagram;
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static int ro_save_draw_width;
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static int ro_save_draw_height;
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/**
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* Export a content as a DrawFile.
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*
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* \param c content to export
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* \param path path to save DrawFile as
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* \return true on success, false on error and error reported
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*/
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bool save_as_draw(struct content *c, const char *path)
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{
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pencil_code code;
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char *drawfile_buffer;
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size_t drawfile_size;
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os_error *error;
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ro_save_draw_diagram = pencil_create();
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if (!ro_save_draw_diagram) {
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warn_user("NoMemory", 0);
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return false;
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}
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ro_save_draw_width = c->width;
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ro_save_draw_height = c->height;
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plot = ro_save_draw_plotters;
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if (!content_redraw(c, 0, -c->height,
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c->width, c->height,
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INT_MIN, INT_MIN, INT_MAX, INT_MAX,
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1,
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0xFFFFFF))
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{
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pencil_free(ro_save_draw_diagram);
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return false;
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}
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/*pencil_dump(ro_save_draw_diagram);*/
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code = pencil_save_drawfile(ro_save_draw_diagram, "NetSurf",
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&drawfile_buffer, &drawfile_size);
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if (code != pencil_OK) {
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warn_user("SaveError", 0);
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pencil_free(ro_save_draw_diagram);
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return false;
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}
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assert(drawfile_buffer);
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error = xosfile_save_stamped(path, osfile_TYPE_DRAW,
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(byte *) drawfile_buffer,
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(byte *) drawfile_buffer + drawfile_size);
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if (error) {
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LOG(("xosfile_save_stamped failed: 0x%x: %s",
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error->errnum, error->errmess));
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warn_user("SaveError", error->errmess);
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pencil_free(ro_save_draw_diagram);
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return false;
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}
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pencil_free(ro_save_draw_diagram);
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return true;
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}
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bool ro_save_draw_rectangle(int x0, int y0, int width, int height,
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int line_width, colour c, bool dotted, bool dashed)
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{
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pencil_code code;
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const int path[] = { draw_MOVE_TO, x0 * 2, -y0 * 2 - 1,
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draw_LINE_TO, (x0 + width) * 2, -y0 * 2 - 1,
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draw_LINE_TO, (x0 + width) * 2, -(y0 + height) * 2 - 1,
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draw_LINE_TO, x0 * 2, -(y0 + height) * 2 - 1,
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draw_CLOSE_LINE,
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draw_END_PATH };
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code = pencil_path(ro_save_draw_diagram, path,
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sizeof path / sizeof path[0],
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pencil_TRANSPARENT, c << 8, width, pencil_JOIN_MITRED,
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pencil_CAP_BUTT, pencil_CAP_BUTT, 0, 0, false,
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pencil_SOLID);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_line(int x0, int y0, int x1, int y1, int width,
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colour c, bool dotted, bool dashed)
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{
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pencil_code code;
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const int path[] = { draw_MOVE_TO, x0 * 2, -y0 * 2 - 1,
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draw_LINE_TO, x1 * 2, -y1 * 2 - 1,
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draw_END_PATH };
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code = pencil_path(ro_save_draw_diagram, path,
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sizeof path / sizeof path[0],
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pencil_TRANSPARENT, c << 8, width, pencil_JOIN_MITRED,
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pencil_CAP_BUTT, pencil_CAP_BUTT, 0, 0, false,
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pencil_SOLID);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_polygon(const int *p, unsigned int n, colour fill)
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{
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pencil_code code;
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int path[n * 3 + 1];
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unsigned int i;
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for (i = 0; i != n; i++) {
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path[i * 3 + 0] = draw_LINE_TO;
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path[i * 3 + 1] = p[i * 2 + 0] * 2;
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path[i * 3 + 2] = -p[i * 2 + 1] * 2;
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}
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path[0] = draw_MOVE_TO;
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path[n * 3] = draw_END_PATH;
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code = pencil_path(ro_save_draw_diagram, path, n * 3 + 1,
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fill << 8, pencil_TRANSPARENT, 0, pencil_JOIN_MITRED,
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pencil_CAP_BUTT, pencil_CAP_BUTT, 0, 0, false,
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pencil_SOLID);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_path(const float *p, unsigned int n, colour fill,
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float width, colour c, const float transform[6])
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{
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if (n == 0)
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return true;
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if (p[0] != PLOTTER_PATH_MOVE) {
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LOG(("path doesn't start with a move"));
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return false;
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}
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int *path = malloc(sizeof *path * (n + 10));
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if (!path) {
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LOG(("out of memory"));
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return false;
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}
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unsigned int i;
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bool empty_path = true;
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for (i = 0; i < n; ) {
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if (p[i] == PLOTTER_PATH_MOVE) {
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path[i] = draw_MOVE_TO;
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path[i + 1] = (transform[0] * p[i + 1] +
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transform[2] * -p[i + 2] +
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transform[4]) * 2;
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path[i + 2] = (transform[1] * p[i + 1] +
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transform[3] * -p[i + 2] +
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-transform[5]) * 2;
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i += 3;
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} else if (p[i] == PLOTTER_PATH_CLOSE) {
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path[i] = draw_CLOSE_LINE;
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i++;
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} else if (p[i] == PLOTTER_PATH_LINE) {
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path[i] = draw_LINE_TO;
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path[i + 1] = (transform[0] * p[i + 1] +
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transform[2] * -p[i + 2] +
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transform[4]) * 2;
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path[i + 2] = (transform[1] * p[i + 1] +
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transform[3] * -p[i + 2] +
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-transform[5]) * 2;
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i += 3;
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empty_path = false;
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} else if (p[i] == PLOTTER_PATH_BEZIER) {
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path[i] = draw_BEZIER_TO;
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path[i + 1] = (transform[0] * p[i + 1] +
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transform[2] * -p[i + 2] +
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transform[4]) * 2;
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path[i + 2] = (transform[1] * p[i + 1] +
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transform[3] * -p[i + 2] +
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-transform[5]) * 2;
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path[i + 3] = (transform[0] * p[i + 3] +
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transform[2] * -p[i + 4] +
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transform[4]) * 2;
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path[i + 4] = (transform[1] * p[i + 3] +
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transform[3] * -p[i + 4] +
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-transform[5]) * 2;
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path[i + 5] = (transform[0] * p[i + 5] +
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transform[2] * -p[i + 6] +
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transform[4]) * 2;
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path[i + 6] = (transform[1] * p[i + 5] +
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transform[3] * -p[i + 6] +
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-transform[5]) * 2;
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i += 7;
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empty_path = false;
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} else {
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LOG(("bad path command %f", p[i]));
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free(path);
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return false;
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}
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}
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path[i] = draw_END_PATH;
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if (empty_path) {
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free(path);
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return true;
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}
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pencil_code code = pencil_path(ro_save_draw_diagram, path, i + 1,
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fill == TRANSPARENT ? pencil_TRANSPARENT : fill << 8,
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c == TRANSPARENT ? pencil_TRANSPARENT : c << 8,
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width, pencil_JOIN_MITRED,
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pencil_CAP_BUTT, pencil_CAP_BUTT, 0, 0, false,
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pencil_SOLID);
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free(path);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_fill(int x0, int y0, int x1, int y1, colour c)
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{
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pencil_code code;
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const int path[] = { draw_MOVE_TO, x0 * 2, -y0 * 2 - 1,
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draw_LINE_TO, x1 * 2, -y0 * 2 - 1,
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draw_LINE_TO, x1 * 2, -y1 * 2 - 1,
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draw_LINE_TO, x0 * 2, -y1 * 2 - 1,
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draw_CLOSE_LINE,
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draw_END_PATH };
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code = pencil_path(ro_save_draw_diagram, path,
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sizeof path / sizeof path[0],
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c << 8, pencil_TRANSPARENT, 0, pencil_JOIN_MITRED,
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pencil_CAP_BUTT, pencil_CAP_BUTT, 0, 0, false,
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pencil_SOLID);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_clip(int clip_x0, int clip_y0,
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int clip_x1, int clip_y1)
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{
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return true;
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}
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bool ro_save_draw_text(int x, int y, const struct css_style *style,
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const char *text, size_t length, colour bg, colour c)
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{
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pencil_code code;
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const char *font_family;
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unsigned int font_size;
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rufl_style font_style;
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nsfont_read_style(style, &font_family, &font_size, &font_style);
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code = pencil_text(ro_save_draw_diagram, x * 2, -y * 2, font_family,
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font_style, font_size, text, length, c << 8);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_disc(int x, int y, int radius, colour colour, bool filled)
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{
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return true;
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}
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bool ro_save_draw_arc(int x, int y, int radius, int angle1, int angle2,
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colour c)
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{
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return true;
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}
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bool ro_save_draw_bitmap(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg, bitmap_flags_t flags)
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{
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pencil_code code;
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const uint8_t *buffer;
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buffer = bitmap_get_buffer(bitmap);
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if (!buffer) {
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warn_user("NoMemory", 0);
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return false;
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}
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code = pencil_sprite(ro_save_draw_diagram, x * 2, (-y - height) * 2,
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width * 2, height * 2,
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((char *) bitmap->sprite_area) +
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bitmap->sprite_area->first);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_group_start(const char *name)
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{
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pencil_code code;
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code = pencil_group_start(ro_save_draw_diagram, name);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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bool ro_save_draw_group_end(void)
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{
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pencil_code code;
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code = pencil_group_end(ro_save_draw_diagram);
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if (code != pencil_OK)
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return ro_save_draw_error(code);
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return true;
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}
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/**
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* Report an error from pencil.
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*
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* \param code error code
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* \return false
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*/
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bool ro_save_draw_error(pencil_code code)
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{
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LOG(("code %i", code));
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switch (code) {
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case pencil_OK:
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assert(0);
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break;
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case pencil_OUT_OF_MEMORY:
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warn_user("NoMemory", 0);
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break;
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case pencil_FONT_MANAGER_ERROR:
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warn_user("SaveError", rufl_fm_error->errmess);
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break;
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case pencil_FONT_NOT_FOUND:
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case pencil_IO_ERROR:
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case pencil_IO_EOF:
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warn_user("SaveError", "generating the DrawFile failed");
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break;
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}
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return false;
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}
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#endif
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